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Nov 15 VH

 
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Earl



Joined: 30 May 2007
Posts: 677
Location: Victoria, KS

PostPosted: Sat Nov 15, 2008 4:23 am    Post subject: Nov 15 VH Reply with quote

Easy as 1-2-3.

Earl
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tlanglet



Joined: 17 Oct 2007
Posts: 2468
Location: Northern California Foothills

PostPosted: Sat Nov 15, 2008 4:32 am    Post subject: Reply with quote

Yes, this was an easy VH. I found four different ways to solve it in one step.
Quote:
Type 1 UR47, w-wing23, xy-wing246 and xy-wing123.
Ted
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Clement



Joined: 24 Apr 2006
Posts: 1111
Location: Dar es Salaam Tanzania

PostPosted: Sat Nov 15, 2008 6:45 am    Post subject: Daily Sudoku: Sat 15-Nov-2008 VH Reply with quote

UR (4,7)r89c48. We can remove 6 in r2c8 to avoid the DP in BOX 8 and 9. In this case 6 must be in r1c9 which solves the puzzle.
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storm_norm



Joined: 18 Oct 2007
Posts: 1741

PostPosted: Sat Nov 15, 2008 7:32 am    Post subject: Reply with quote

yep, I found out how 1,2,3 easy it was was.
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cgordon



Joined: 04 May 2007
Posts: 769
Location: ontario, canada

PostPosted: Sat Nov 15, 2008 4:22 pm    Post subject: Reply with quote

Very prosaic.
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crunched



Joined: 05 Feb 2008
Posts: 168

PostPosted: Sat Nov 15, 2008 4:33 pm    Post subject: Reply with quote

Here is the puzzle after removing most/all basics.
From here, you can see the UR (which I did not see when I solved this), and the 1-2-3 xy wing.

Code:

+-------------+-------------+------------+
| 3   46   2  | 5  7   9    | 8   1   46 |
| 5   468  1  | 23 468 368  | 9   246 7  |
| 68  9    7  | 12 468 168  | 24  5   3  |
+-------------+-------------+------------+
| 9   238  38 | 6  5   7    | 1   248 24 |
| 7   5    4  | 8  1   2    | 6   3   9  |
| 128 128  6  | 9  3   4    | 27  278 5  |
+-------------+-------------+------------+
| 4   7    5  | 13 68  1368 | 23  9   26 |
| 268 2368 38 | 47 9   36   | 5   47  1  |
| 16  136  9  | 47 2   356  | 347 467 8  |
+-------------+-------------+------------+

Play this puzzle online at the Daily Sudoku site
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